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ORIGINAL ARTICLE
Year : 2017  |  Volume : 4  |  Issue : 4  |  Page : 356-360

Toluidine blue staining in identification of a biopsy site in potentially malignant lesions: A case–control study


Department of Oral Medicine and Radiology, Chettinad Dental College and Research Institute, Kanchipuram, Tamil Nadu, India

Correspondence Address:
Mayank Kumar Parakh
Chettinad Dental College and Research Institute, Kanchipuram, Tamil Nadu
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/apjon.apjon_38_17

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Objective: Oral cancer is a significant threat to public health all over the world, especially in Southeast Asia. At the present time, screening of oral cancer, its premalignant stages as well as its early detection, is still largely based on visual examination of the mouth. Visual examination is highly subjective and hence lacks the specificity and sensitivity. The objective of this study was to determine the usefulness of toluidine blue in marking a biopsy site in potentially malignant disorders. Methods: In this study, a total of 500 patients were screened. The study was a case–control study which included 17 lesion cases and 23 normal controls. Toluidine blue staining was taken into consideration to identify clinically doubtful oral potentially malignant lesions and to compare the clinical evaluation with toluidine blue stain followed by a punch biopsy and histological evaluation. SPSS Statistics version 16.0 and Chi-square test were used for statistical analyses. Results: The most common site for potentially malignant lesions was found to be the buccal mucosa. The sensitivity of toluidine blue was found to be 88.89%, while specificity was found to be 74.19%. The positive predictive and negative predictive values were 50% and 97.83%, respectively. P = 0.000672 was considered statistically significant. Conclusions: The results seem to be promising, but many such studies have to be done at larger scales to exactly help us in identifying the capability of toluidine blue in the long run.


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